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Theoretical studies on nonperturbative methods of analyzing quantum many-body dynamics subject to single-atom-resolved measurement and control

Research Project

Project/Area Number 19K23424
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0202:Condensed matter physics, plasma science, nuclear engineering, earth resources engineering, energy engineering, and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Ashida Yuto  東京大学, 大学院理学系研究科(理学部), 准教授 (00845464)

Project Period (FY) 2019-08-30 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords量子多体物理 / 量子光学 / 非平衡 / 量子多体系 / 非平衡開放系 / 機械学習
Outline of Research at the Start

身の回りの物質は電子と原子が互いに相互作用して形作られている。このような量子多体系のダイナミクスを、単一原子分解能で微視的に観測/制御する事が近年実現した。ミクロな運動の詳細は観測/制御できないという仮定のもとに成立してきた従来の物性/統計物理学の枠組みは、このような状況では破綻し、異なる一般原理に基づいた基礎理論が必要となる。一方で、単一原子制御は固体物理では実現し得なかった新しいクラスの量子物質の研究を可能にする。本研究では、単一原子観測/制御下の非平衡な量子多体問題を解明するための基礎理論を構築し、物性/統計物理学の新たなフロンティアを拓くことを目指し研究を行う。

Outline of Final Research Achievements

We have developed nonperturbative methods to analyze artificial quantum systems, including cold atomic systems and cavity quantum electrodynamical materials. On the basis of these methods, we found novel dynamics in nonequlibrium Rydberg gases as well as the possibility of realizing an equilibrium ferroelectric transition in cavity confined heterostructured materials.

Academic Significance and Societal Importance of the Research Achievements

本研究で構築された理論手法により、これまで解析が困難であったクラスの非平衡多体問題の解明に成功した。また、共振器物質系では量子的な光に誘起された量子相の制御が可能であることを示唆する結果が得られた。これらの成果は未来の新規デバイスあるいは物性制御の可能性を開くものであるとともに、将来の量子情報技術にも波及効果が期待できるものである。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (43 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (7 results) Journal Article (15 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 15 results,  Open Access: 6 results) Presentation (17 results) (of which Int'l Joint Research: 9 results,  Invited: 11 results) Book (1 results) Remarks (3 results)

  • [Int'l Joint Research] スイス連邦工科大学(スイス)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] オックスフォード大学(英国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] マックスプランク研究所(ドイツ)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] ハーバード大学(米国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Harvard University/Harvard ITAMP(米国)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Max Planck Institute for Quantum Optics(ドイツ)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Chinese Academy of Science(中国)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Cavity Quantum Electrodynamics at Arbitrary Light-Matter Coupling Strengths2021

    • Author(s)
      Ashida Yuto、Imamoglu Atac、Demler Eugene
    • Journal Title

      Physical Review Letters

      Volume: 126 Issue: 15 Pages: 153603-153603

    • DOI

      10.1103/physrevlett.126.153603

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Non-Hermitian physics2021

    • Author(s)
      Ashida Yuto、Gong Zongping、Ueda Masahito
    • Journal Title

      Advances in Physics

      Volume: 69 Issue: 3 Pages: 249-435

    • DOI

      10.1080/00018732.2021.1876991

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Higher-order efficiency bound and its application to nonlinear nanothermoelectrics2021

    • Author(s)
      Kamijima Takuya、Otsubo Shun、Ashida Yuto、Sagawa Takahiro
    • Journal Title

      Physical Review E

      Volume: 104 Issue: 4 Pages: 044115-044115

    • DOI

      10.1103/physreve.104.044115

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Learning the best nanoscale heat engines through evolving network topology2021

    • Author(s)
      Ashida Yuto、Sagawa Takahiro
    • Journal Title

      Communications Physics

      Volume: 4 Issue: 1 Pages: 45-45

    • DOI

      10.1038/s42005-021-00553-z

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Measurement-induced quantum criticality under continuous monitoring2020

    • Author(s)
      Fuji Yohei、Ashida Yuto
    • Journal Title

      Physical Review B

      Volume: 102 Issue: 5 Pages: 054302-054302

    • DOI

      10.1103/physrevb.102.054302

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Deep Reinforcement Learning Control of Quantum Cartpoles2020

    • Author(s)
      Wang Zhikang T.、Ashida Yuto、Ueda Masahito
    • Journal Title

      Physical Review Letters

      Volume: 125 Issue: 10 Pages: 100401-100401

    • DOI

      10.1103/physrevlett.125.100401

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] PT-symmetric non-Hermitian quantum many-body system using ultracold atoms in an optical lattice with controlled dissipation2020

    • Author(s)
      Y. Takasu, T. Yagami, Y. Ashida, R. Hamazaki, Y. Kuno and Y. Takahashi
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 2020 Issue: 12

    • DOI

      10.1093/ptep/ptaa094

    • NAID

      120006958090

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Probing XY phase transitions in a Josephson junction array with tunable frustration2020

    • Author(s)
      R. Cosmic, K. Kawabata, Y. Ashida, H. Ikegami, S. Furukawa, P. Patil, J. M. Taylor, and Y. Nakamura
    • Journal Title

      Phys. Rev. B

      Volume: 102 Issue: 9 Pages: 094509-094509

    • DOI

      10.1103/physrevb.102.094509

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Rectification in nonequilibrium steady states of open many-body systems2020

    • Author(s)
      Yamamoto Kazuki、Ashida Yuto、Kawakami Norio
    • Journal Title

      Physical Review Research

      Volume: 2 Issue: 4 Pages: 043343-043343

    • DOI

      10.1103/physrevresearch.2.043343

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Exceptional non-Hermitian topological edge mode and its application to active matter2020

    • Author(s)
      Sone Kazuki、Ashida Yuto、Sagawa Takahiro
    • Journal Title

      Nature Communications

      Volume: 11 Issue: 1 Pages: 5745-5745

    • DOI

      10.1038/s41467-020-19488-0

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Quantum Electrodynamic Control of Matter: Cavity-Enhanced Ferroelectric Phase Transition2020

    • Author(s)
      Ashida Yuto、Imamoglu Atac、Faist Jerome、Jaksch Dieter、Cavalleri Andrea、Demler Eugene
    • Journal Title

      Physical Review X

      Volume: 10 Issue: 4 Pages: 041027-041027

    • DOI

      10.1103/physrevx.10.041027

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Continuous Phase Transition without Gap Closing in Non-Hermitian Quantum Many-Body Systems2020

    • Author(s)
      N. Matsumoto, K. Kawabata, Y. Ashida, S. Furukawa, M. Ueda
    • Journal Title

      Physical Review Letters

      Volume: 125 Issue: 26 Pages: 260601-260601

    • DOI

      10.1103/physrevlett.125.260601

    • NAID

      130008152629

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Anomalous Topological Active Matter2019

    • Author(s)
      Kazuki Sone, Yuto Ashida
    • Journal Title

      Physical Review Letters

      Volume: 123 Issue: 20 Pages: 205502-205502

    • DOI

      10.1103/physrevlett.123.205502

    • NAID

      130008156831

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Quantum Rydberg Central Spin Model2019

    • Author(s)
      Yuto Ashida, Tao Shi, Richard Schmidt, H. R. Sadeghpour, J. Ignacio Cirac, Eugene Demler
    • Journal Title

      Physical Review Letters

      Volume: 123 Issue: 18 Pages: 183001-183001

    • DOI

      10.1103/physrevlett.123.183001

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Efficient variational approach to dynamics of a spatially extended bosonic Kondo model2019

    • Author(s)
      Yuto Ashida, Tao Shi, Richard Schmidt, H. R. Sadeghpour, J. Ignacio Cirac, Eugene Demler
    • Journal Title

      Physical Review A

      Volume: 100 Issue: 4 Pages: 043618-043618

    • DOI

      10.1103/physreva.100.043618

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Shedding quantum light on quantum materials2022

    • Author(s)
      Yuto Ashida
    • Organizer
      The 3rd International Symposium on Dynamics of Artificial Quantum Systems (DAQS2022)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Hermitian and non-Hermitian topological phenomena in active matter2022

    • Author(s)
      Yuto Ashida
    • Organizer
      APS March meeting 2022
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 例外表面モードに保護されたトポロジカルレーザー2022

    • Author(s)
      曽根和樹, 蘆田祐人, 沙川貴大
    • Organizer
      日本物理学会2022年年次大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ジョセフソン接合における量子相転移の非摂動くりこみ群解析2022

    • Author(s)
      増木貫太, 數藤広之, 押川正毅, 蘆田祐人
    • Organizer
      日本物理学会2022年年次大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Nonequilibrium dynamics and thermalization in open quantum many-body systems2021

    • Author(s)
      Yuto Ashida
    • Organizer
      META 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] バンドトポロジー由来の非線形トポロジカル同期2021

    • Author(s)
      曽根和樹, 蘆田祐人, 沙川貴大
    • Organizer
      日本物理学会2021年秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 差分進化を用いた最適なナノ熱機関の探索2021

    • Author(s)
      蘆田祐人
    • Organizer
      ディープラーニングと物理学オンライン
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Quantum electrodynamic control of matter (Planned)2021

    • Author(s)
      Yuto Ashida
    • Organizer
      Shedding quantum light on strongly correlated materials
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Shedding quantum light on quantum many-body systems, Theoretical studies of topological phases of matter, Kyoto-Zoom hybrid meeting2020

    • Author(s)
      Y. Ashida
    • Organizer
      Kyoto-Zoom hybrid meeting
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 量子的な光を用いた物質制御:真空電磁場に誘起された強誘電転移2020

    • Author(s)
      Y. Ashida
    • Organizer
      日本物理学会 2020 年秋季大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 差分進化を用いた最適なナノ熱電熱機関の探索2020

    • Author(s)
      Y. Ashida
    • Organizer
      日本物理学会 2020 年秋季大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 非平衡開放系の物理2020

    • Author(s)
      Y. Ashida
    • Organizer
      KEK連携研究会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Nonequilibrium dynamics and thermalization in open quantum many-body systems (Planned)2020

    • Author(s)
      Yuto Ashida
    • Organizer
      META2020
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Quantum many-body physics in open systems2020

    • Author(s)
      Yuto Ashida
    • Organizer
      Topological phenomena in non-Hermitian and non-equilibrium systems
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Quantum Rydberg central spin problem: remnant of integrability in atomic gases2019

    • Author(s)
      Yuto Ashida
    • Organizer
      Workshop on Recent Progress in Mathematical and Statistical Physics
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Quantum criticality and nonequilibrium phases in non-Hermitian systems2019

    • Author(s)
      Yuto Ashida
    • Organizer
      META2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] リュードベルグ原子気体における近藤・セントラルスピン問題2019

    • Author(s)
      蘆田祐人
    • Organizer
      日本物理学会2019年秋季大会
    • Related Report
      2019 Research-status Report
  • [Book] Quantum Many-Body Physics in Open Systems: Measurement and Strong Correlations2020

    • Author(s)
      Yuto Ashida
    • Total Pages
      243
    • Publisher
      Springer
    • ISBN
      9789811525797
    • Related Report
      2019 Research-status Report
  • [Remarks] 蘆田研究室HP

    • URL

      http://park.itc.u-tokyo.ac.jp/ashida-g/home.html

    • Related Report
      2021 Annual Research Report
  • [Remarks] 東京大学蘆田研究室

    • URL

      http://park.itc.u-tokyo.ac.jp/ashida-g/home.html

    • Related Report
      2020 Research-status Report
  • [Remarks] Yuto Ashida Web Site

    • URL

      https://sites.google.com/site/yutoashida/homejp

    • Related Report
      2019 Research-status Report

URL: 

Published: 2019-09-03   Modified: 2023-01-30  

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